2021 Updated Verified Pass DCA Exam - Real Questions & Answers
Dumps Moneyack Guarantee - DCA Dumps Approved Dumps
Topics of Docker Certified Associate Exam
Candidates should apprehend the examination topics before they begin of preparation. Our DCA dumps will include the following topics:
Lesson 01 - Introduction
- Docker Architecture Container Format
- Docker Architecture InAction
- Docker Architecture Engine And Objects
- Images And Containers
- Understanding Docker Overview
- Docker Ecosystem
- Containerization And Virtualization
Lesson 02 - Understanding Docker
- Deleting Containers
- Installation: continued
- Installation: CentOS
- Working with Containers Hostnames
- End of Module
- Docker On Linux Platform
- Deploy, Login, Exit Container
- Stats Inspect
- List,Start, Stop Restart Containers
- Containers on Filesystem
- Multiple Containers
Lesson 03 - Docker CE on Linux Platform
- Container Networking
- Exercise: Use Custom Networks
- Host Network
- None Network
- Introduction to Overlay Network
- Multiple Networks In Container
- Bridge Network
- Create New Networks
- Docker Networking
- Remove Networks
- Disconnect And Add Network
Lesson 04 - Docker Networking
- Docker Images CLI Commands: Contd
- Docker Images
- Lesson 05 - Docker Images
- Selecting Storage Driver
- Docker tmpfs Mounts
- Search and Pull Images from Docker Hub
- Push Images to Docker Hub
- Docker Storage and Volumes
- Docker Volumes
- Build Image using Dockerfile
- External Storage
- Docker Images: Recap
- Docker Storage Drivers
- Docker file Instructions
- Persistent Storage
- Docker Bind Mounts
- Docker Images CLI Commands
- Build Image using Commit
- Manage Application Data
Lesson 06 - Docker Storage and Volumes
- Case for Docker Compose
- Compose Installation
- Compose Lab
- Docker Compose
Lesson 07 - Docker Compose
- Maintain Swarm
- Managing Swarm Services
- Concepts of Swarm
- Docker Stack
- Docker Swarm
- Create Swarm
- Deploy Services to Swarm
- Secrets and Overlay Network
- Updates to Services
Lesson 08 - Orchestration Docker Swarm
- Introduction to UCP
- LDAP with UCP
- Universal Control Plane
- External Certificates
- Deploy, Manage, and Monitor UCP
- Client Certificate Bundles
- Access Control
Lesson 09 - Universal Control Plane
- Miscellaneous Topic with DTR
- Introduction Deploy DTR
- Backup Swarm UCP DTR
- Docker Trusted Registry
Lesson 10 - Docker Trusted Registry
- Security With MTLS
- Logs and Logging Drivers
- Docker Security Logs
- Security Scanning
- Docker Content Trust
NEW QUESTION 72
The output of which command can be used to find the architecture and operating system an image is
compatible with?
- A. docker image ls <image-id>
- B. docker image inspect --filter {{.Architecture}} {{.OS}} ' <image-id>
- C. docker image inspect --format {{.Architecture}} {{.OS}} ' <image-id>
- D. docker image info <image-id>
Answer: C
NEW QUESTION 73
Some Docker images take time to build through a Continuous Integration environment. You want to speed up builds and take advantage of build caching.
Where should the most frequently changed part of a Docker image be placed in a Dockerfile?
- A. in the ENTRYPOINT directive
- B. at the top of the Dockerfile
- C. after the FROM directive
- D. at the bottom of the Dockerfile
Answer: D
NEW QUESTION 74
Two development teams in your organization use Kubernetes and want to deploy their applications while ensuring that Kubernetes-specific resources, such as secrets, are grouped together for each application.
Is this a way to accomplish this?
Solution: Add all the resources to the default namespace.
- A. No
- B. Yes
Answer: A
NEW QUESTION 75
In the context of a swarm mode cluster, does this describe a node?
Solution: a virtual machine participating in the swarm
- A. No
- B. Yes
Answer: A
NEW QUESTION 76
Which networking drivers allow you to enable multi-host network connectivity between containers?
- A. macvlan, ipvlan, and overlay
- B. bridge, macvlan, ipvlan, overlay
- C. bridge, user-defined, host
- D. host, macvlan, overlay, user-defined
Answer: A
NEW QUESTION 77
After creating a new service named 'http', you notice that the new service is not registering as healthy. How do
you view the list of historical tasks for that service by using the command line?
- A. 'docker inspect http'
- B. 'docker ps http'
- C. 'docker service inspect http'
- D. 'docker service ps http'
Answer: D
NEW QUESTION 78
Will this Linux kernel facility limit a Docker container's access to host resources, such as CPU or memory?
Solution: cgroups
- A. No
- B. Yes
Answer: B
NEW QUESTION 79
Which of the following commands starts a Redis container and configures it to always restart unless it is explicitly stopped or Docker is restarted?
- A. 'docker run -d --restart omit-stopped redis'
- B. 'docker run -d --restart unless-stopped redis'
- C. 'docker run -d --restart-policy unless-stopped redis'
- D. 'docker run -d --failure omit-stopped redis'
Answer: C
NEW QUESTION 80
You created a new service named 'http' and discover it is not registering as healthy. Will this command enable you to view the list of historical tasks for this service?
Solution: 'docker inspect http'
- A. No
- B. Yes
Answer: A
NEW QUESTION 81
Seven managers are in a swarm cluster.
Is this how should they be distributed across three datacenters or availability zones?
Solution: 3-3-1
- A. No
- B. Yes
Answer: A
NEW QUESTION 82
Which of these swarm manager configurations will cause the cluster to be in a lost quorum state?
- A. 1 manager of which 1 is healthy
- B. 4 managers of which 2 are healthy
- C. 5 managers of which 3 are healthy
- D. 3 managers of which 2 are healthy
Answer: B
NEW QUESTION 83
You want to create a container that is reachable from its host's network. Does this action accomplish this?
Solution: Use network attach to access the containers on the bridge network
- A. No
- B. Yes
Answer: A
NEW QUESTION 84
The Kubernetes yaml shown below describes a clusterIP service.
Is this a correct statement about how this service routes requests?
Solution: Traffic sent to the IP of this service on port 8080 will be routed to port 80 in a random pod with the label aPP: nginx.
- A. No
- B. Yes
Answer: B
NEW QUESTION 85
One of several containers in a pod is marked as unhealthy after failing its livenessProbe many times. Is this the action taken by the orchestrator to fix the unhealthy container?
Solution: The controller managing the pod is autoscaled back to delete the unhealthy pod and alleviate load.
- A. No
- B. Yes
Answer: B
NEW QUESTION 86
A user is having problems running Docker. Which of the following will start Docker in debug mode?
- A. Start the 'dockerd' process manually with the '--logging' flag set to debug
- B. Start the 'dockerd' process manually with the '--raw-logs' flag set to debug
- C. Set the logging key to debug in the 'daemon.json' file.
- D. Set the debug key to true in the 'daemon.json' file.
Answer: D
NEW QUESTION 87
Which of the following is true about using the '-P' option when creating a new container?
- A. Docker binds each exposed container port to a random port on a specified host interface
- B. Docker gives extended privileges to the container.
- C. Docker binds each exposed container port with the same port on the host
- D. Docker binds each exposed container port to a random port on all the host's interface
Answer: D
NEW QUESTION 88
You have just executed 'docker swarm leave' on a node. What command can be run on the same node to confirm it has left the cluster?
- A. docker system status
- B. docker system info
- C. docker node ls
- D. docker system status
Answer: B
NEW QUESTION 89
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Docker Certified Associate Exam Certified Professional salary
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Updated PDF (New 2021) Actual Docker DCA Exam Questions: https://www.vceprep.com/DCA-latest-vce-prep.html
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